Brake-block for railroad-cars



No, 12,245;h

L. YPAIGE. Car Brake.

` `.Patented lan. 1.6, 1855.

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mun .n --fununmunnll ummm orrion LUGIUs PAIGE, or oAvENDIsH, VERMONT.

BRAKE-BLOCK FOR .RAILROAD-CARS- Specification of Letters Patent N0..12,245.5, dated January 16, 185.5.

Figure 1, is a plan or top view of' a cartruck, with my improved brakesYapplied to it. Fig. 2, is a detached front view of the screw, and thenut, by which motion is communicated to the device for operating thebrakes. Fig. 3,v is a plan or top view of the wheel, friction rollers,levers, and springs; the above named parts forming the device by lwhichthe brakes are operated. In this view, the upper disk of the wheel isremoved. Fig. 4, is a side view of one of the wheels, and one of thesockets with its shoe inserted in it. Fig. 5, is a front view of thewheel, friction rollers, levers, and springs; the same parts as shown inthe plan Fig. 3. Fig. 6, is a back view of a socket, with its shoeinserted in it. v

Similar letters of reference indicate corresponding parts in each of thefigures.

This invention relates to a certain new land useful improvement inrail-road carbrakes; and it consists z-In a peculiar construction andarrangement of the shoes, which bear against the wheels.

To enable others skilled in the art, to make and use my invention, Iwill proceed to describe its construction and operation.

A, Fig. 1, represents the frame of a car truck, constructed in theordinary manner; said truck having its wheels, B, attached to it asusual.

Underneath a center crosspiece, C, of the truck, there is a wheel, D,having two friction rollers, (a), (a), placed at opposite points nearits periphery; see Figs. 1,- 3, and 5. The wheel, D, may be formed oftwo horizontal disks, (b), (b), connected by small rods, (c), (c), seeFig. 3, on which the friction rollers may be placed as shown in Fig. 3.

The axis, (d) of the wheel, D, passes up through the center crosspiece,C, of the truck, and ts into the center of a lever, E, shown in Figs. 1,and 5; said lever being secured to the axis, (d), by a nut (e). The

`lower end of the aXis, (ai), is stepped in the lower part of a frame,F, underneath 1 the crosspiece, C, more particularly shown G, G, are twolevers, the outer ends of which are secured by pivots, (f), in the sides`of the frame, F; sufficient play or space being allowed in the frame,F, for the working of the levers. The inner ends of the levers, G, G,bear against the friction rollers, (a), (a), as shownin Figs. 1, 3, and5.

L against the levers,`G, G, and press their inner ends against thefriction rollers, (a), (a).

I, I, areI the brakeA or cross bars, to which lthevp shoes, J, whichwill be hereafter del scribed, are attached. These bars, I, are securedor suspended, at each end of the truck frame, by links, K, as will bemore fully shown hereafter.

The bars, I, I, are connected to the levers, G,G, by rods, L, L, asshown in Fig. l. The rods being connected to the levers at the points,(g), (g), as shown in Figs. 1, 3, and 5, and connected to the bars, I,at about their centers, as shown at, (7i-U, in Fig. 1.

To one end of the lever, a chain, M, is attached, which passes under apulley or roller, N at one end of the car frame, and is then attached toa nut, O, through which a hand screw, P, passes; said nut working in asuitable guide frame, Q, as shown in Fig. 2.

At each end of the bars, I, I, there is attached a metallic socket, R,seen in Figs. 1, and 4 and also, 6. The shoes J, are placed in thesesockets, and secured therein by means of the face plates, (o), whichform one side of the sockets; see Figs. 4C, and 6; the face plates beinv secured to the sockets by means of screwolts, (fw), which pass throughthe top and bottom of the sockets and faceplates. On the tops of theshoes, J, and also underneath them, are metallic strips, (i), the innerends of which are intended to be on the same curve as theface of theshoe. These metallic strips are for the purpose of clearing the wheelsof snow, and ice which may collect upon them, during inclement seasons,the inner ends of the strips bearing against the treads or faces of thewheels, at the same time, with the shoes.

The shoes may be adjusted, as they are worn, by unscrewing, and therebyloosening the face plates, by which the shoes may be shoved nearer thewheels; the face plates being screwed tightly against the shoes,

I-I, H, are springs, the ends. of which' bear whenthey are properlyadjusted, and thereby firmly securing the shoes in the sockets. Ifnecessary, projections, (m), as shown by the dotted lines in Fig. 6, maybe made on the inner sides of the face-plates, for the purpose ofpreventing the least slipping of the shoes in the sockets. Thus, whenthe old shoes are shortened by use, the making of new ones is obviated;as it will be seen that, by placing the shoes in sockets, they may beused until they are almost wholly worn out; whereas, the ordinaryslides, by being permanently attached to the bars, I, must be replacedby new ones, when shortened a trifle by use.

By operating the hand wheel, on the top of the screw, P, the nut, O, israised or lowered; and the levers, G, G, are operated; for instance,when the nut, O, is raised, the wheel, I), is turned; and the frictionrollers,

1 (a), (a), force out the levers, Gr, G, which consequently draw therods, I, I, and shoes, J, toward the wheels, B, causing the shoes topress against the wheels. Vhen the nut, O, is lowered and the chain, M,consequently loosened, the springs, H, H, force back the levers andwheeland rollers to their original position, and relieve the wheels fromthe pressure of the shoes. The two positions of the levers, springs, andthe wheel, with its rollers, are shown in Fig. 3, by dotted and solidlines.V y

I do not claim the placing the shoes in sockets or boxes, wherein theyremain permanently iXed until worn up so as to be d ma an u l y LUoIUsPAIGE.

Vitnesses:

S. H. WALES, S. F. COHEN.

